1. Density Notes Science Tennessee SPI Objective:
Apply an equation to determine the density of an object based on its mass and volume.
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Check for Understanding
Calculate the density of various objects.
Essential Question(s)
1) What is density?
2) What is mass, and how do I measure it?
3) What is volume, and how do I measure it?
4) How do I calculate density?
5) How do I multiply and divide with decimals without
a calculator?

2. Answer: 2.5 g/cm3 2 . 5 Density = 10 25 . -___ 20 5 -___ 5 0 0 0 g/cm3
Solve the Density Problem Shown Below
Do not use a calculator
Round to the hundredths place
Show all of your work
Calculate the density of an object with a mass of 25g and a
volume of 10cm3
Reminder: The mouse goes in the house (mass is the mouse!) 2 . 5
Density = .
Units…
g/cm3
-___ 20 5
-___
5 0
0 0
Answer: 2.5 g/cm3

3. Answer: 1.05 kg/m3 1 . 4 6 Density = 43 45 . -__ 43 2 -___ 172 2 8
Solve the Density Problem Shown Below
Do not use a calculator
Round to the hundreths place
Show all of your work
Calculate the density of an object with a mass of 45kg and a
volume of 43m3
Reminder: The mouse goes in the house (mass is the mouse!) 1 . 4 6
Density = .
Units…
kg/m3
-__ 43 2
-___
172
2 8
Answer: 1.05 kg/m3

4. SPI 0807.9.7 Density Notes 4.6 g/cm3 3.7 g/cm3 2.7 g/cm3 4.0 g/cm3
Which cube below has the LEAST density?
Do not use a calculator.
Compute density on your paper while I work it on the board.
Round to the tenths place.
Notes
Science
Show all your work, and don't Forget Your Units!
written like this…g/cm3
(A)
Mass: 23g
Volume: 5cm3
(B)
Mass: 11g
Volume: 3cm3
4.6 g/cm3
3.7 g/cm3
(C)
Mass: 19g
Volume: 7cm3
(D)
Mass: 12g
Volume: 3cm3
Least Dense
2.7 g/cm3
4.0 g/cm3

5. SPI
Density
Answer this question.
Again, do not use a calculator, and show all your work.
Compute the density on your paper while I work it on the board.
Notes
Science
Answer
9 g/cm3
Density= volume mass
Density=

6. SPI 0807.9.7 Notes Density 1 g/ml 0.8 g/ml 1.08 g/ml 0.9 g/ml
Answer this question. Do not use a calculator.
Work it out on your paper while I do it on the board.
Show all your work.
Notes
Science
Don't Forget Your Units!
written like this…g/ml
Sample A D=
Sample B D=
Sample C D=
Sample D D=
Sample A
1 g/ml
Sample B
0.8 g/ml
Sample C
1.08 g/ml
Sample D
0.9 g/ml